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An aqueous sodium sulfide solution has a vapor pressure of 80.9mmHg at 50 ?C. The vapor...

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Chemistry

An aqueous sodium sulfide solution has a vapor pressure of80.9mmHg at 50 ?C. The vapor pressure of pure water at thistemperature is 92.6 mmHg. (Assume sodium sulfide completelydissociates.)

What is the concentration of sodium sulfide in mass percent?

Please show all work.

Answer & Explanation Solved by verified expert
4.3 Ratings (627 Votes)
Vapor pressure of solution 809 mmHg vapor pressure of pure water 926 mmHg mole fraction of water Vapor pressure of solution vapor pressure of pure water mole fraction of water 809 mmHg 926    See Answer
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